康藏与西南:近代以来西南边疆的区域重构

近代的内边分野格局造就了我国特殊的"内方区"观念。在内方区观念的干扰下,康、藏经常被看做是西部边疆、西北边疆的组成部分,而早期的"西南"或"西南边疆"一般不包括康、藏在内。1930年代以来,受到抗战地域格局的影响,康、藏越来越被看做是"西南"和"西南边疆"的重要组成部分。尤其是张其昀等学者提出的区划思路,明确体现出"西南边疆"的重构态势。近代以来西南边疆的区域重构历程,体现出地域格局主导下的区划内涵变化,亦即"经济第一"还是"国防优先"区划原则在不同阶段下的运用。

Contribution of intraseasonal oscillation to long-duration summer precipitation events over southern China

Precipitation events spanning multiple days may have consequences different from those limited to a single day.In the present paper,the authors analyze circulation anomalies and precursory signals associated with long-duration（over 14 days） summer precipitation events over southern China.The results show that the over-14-day precipitation events are induced by an anomalous lowertropospheric（850-hPa） cyclone over the South China Sea（SCS） and southern China.The anomalous westerly winds to the south of the anomalous cyclone can be traced to north of New Guinea 30 days before.To the north of anomalous westerly winds,anomalous easterly winds appear later.The anomalous westerly and easterly winds form a cyclonic anomaly,moving northward and slightly westward during the following days and eventually controlling the SCS and southern China.The northward movement of anomalous westerly and easterly winds can also be found in the 30-60-day filtered wind field.This implies that the northward propagating 30-60-day intraseasonal oscillation from the equatorial western Pacific has an important contribution to over-14-day precipitation events over southern China.

Female Leadership and Organizational Climate in a University Institute

This paper addresses the case of the Professional Institute of the Southern Region （IPRES）, an institute of higher education in the State University of Morelos, with the aim of showing the measurement results of organizational climate before and after the change of the principal to know some internal features and describe the organizational climate of workers＇ perception in a transition stage; besides, the influence of the current director＇s leadership is analyzed in the achievement of organizational goals and how the perception of organizational climate or working environment can be affected by female leadership is also dealt with. In Mexico, there are more and more women running various organizations, including those belonging to the field of education, and universities are no exception. On the other hand, the type of leadership being exercised can promote or hinder the proper performance of the institute and may be a factor of distinction and influence the behavior of those who integrate it; therefore, knowing how it works provides feedback about the processes that determine organizational behavior and the working environment.

A Practical Online Approach to Protecting Kernel Heap Buffers in Kernel Modules

Heap overflow attack is one of the major memory corruption attacks that have become prevalent for decades. To defeat this attack,many protection methods are proposed in recent years. However,most of these existing methods focus on user-level heap overflow detection. Only a few methods are proposed for kernel heap protection. Moreover,all these kernel protection methods need modifying the existing OS kernel so that they may not be adopted in practice. To address this problem,we propose a lightweight virtualization-based solution that can protect the kernel heap buffers allocated for the target kernel modules. The key idea of our approach is to combine the static binary analysis and virtualization technology to trap a memory allocation operation of the target kernel module,and then add one secure canary word to the end of the allocated buffer. After that,a monitor process is launched to check the integrity of the canaries. The evaluations show that our system can detect kernel heap overflow attacks effectively with minimal performance cost.

40 Years of Applied Linguistics: Investigating Content Areas, Research Methods, and Statistical Techniques

This review study was designed to map out the research trends through an intensive text analysis of 1,366 research articles （RAs） of applied linguistics during the past 40 years （from 1976 to 2015）. RAs were coded and analyzed by four analysts to identify their content of research, research methods, and statistical procedures. It was found that there has been an increase in the number and the average length of articles. The average length has been on the rise from 8.09 pages in 1976-1985 to 14.38 during 2006-2015. The extensive review of the RAs also revealed a broad range of themes that belonged to 34 research domains. SLA, Technology 8： Language Learning, Language Teaching Methodology, Language Testing, and Psycholinguistics were the most widely researched areas. The qualitative method with 33.97% was the dominant research method in the journals. Regarding the statistical techniques, it was illustrated that descriptive statistics, Pearson correlation, ANOVA, and t-test were the most commonly used procedures in the applied linguistic RAs.

Geochemical studies on the source region of Asian dust

The North China and the neighbouring Mongolia in Asian Interior is characterized by extremely dry climate, resulted in one of the world＇s major dust emission centres. Deciphering the source region of Asian dust is critical for revealing the mechanism of the dust production, interpreting the paleo-environrnental records of eolian deposits, predicting the overall environmental effects of dust, and setting the strategies for the control of contemporary dust storms. This paper summarizes the geochemical methods applied to the source tracing of Asian dust. Nd-Sr isotopes were the most extensively studied source tracer of Asian dust and have been successfully applied in many cases. Geochemistry of detrital monomineral shows great theoretical advantages in source tracing and deserves further studies. The short-range transportation of Chinese loess with direction similar to that of the prevailing near surface wind is revealed. Source tracing also shows that the Asian dust has two ultimate material sources from the northern margin of the Tibetan Plateau and the Central Asian Orogen, which confirms the importance of mountain processes in the production of silt eolian particles. Based on the recent progresses on the source tracing of Asian dust, discussions are expanded on the natural background of Asian dust storms and potential anthropogenic influence, the materials evolution of the source regions of Asian dust and its relationships with climate changes and Tibetan uplift, and the role of Tibetan uplift in the Asian dust system.

Thermal Magnifier and Minifier

For thermal conduction cases,one can detect the size of an object explicitly by measuring the temperature distribution around it.If the temperature is the only signature we can obtain,we will give an incorrect judgment on the shape or size of the object by disturbing the distribution of it.According to this principle,in this article,we develop a transformation method and design a dual-functional thermal device,which can create a thermal illusion that the object inside it ＂seems＂ to appear bigger or smaller than its original size.This device can functionally switch among magnifier and miniGer at will The proposed device consists of two layers：the cloak and the complementary material.A thermal cloak can make the internal region thermally ＂invisible＂ while the complementary layer offsets this effect.The combination leads to the illusion of magnification and minification.As a result of finite element simulations,the performances of the illusions are confirmed.